Remote Telescope Markup Language

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The Remote Telescope Markup Language (RTML) is an XML dialect for controlling remote and/or robotic telescopes. It is used to describe various telescope parameters (such as coordinates and exposure time) to facilitate observation of selected targets. RTML instructions were designed to be displayed in a more human-readable way; they are then processed and executed by telescopes through local parsers.[1][2][3]

It was created by UC Berkeley's Hands-On Universe project in 1999.[4] Because of its XML structure and consequent flexibility readability, it is now widely used, and has become an international standard for astronomical imaging.[1][5]


  1. ^ a b Pennypacker, C.; Boer, M.; Denny, R.; et al. (2002). "RTML – a standard for use of remote telescopes: Enabling ubiquitous use of remote telescopes" (PDF). Astronomy & Astrophysics. 395: 727–731. Bibcode:2002A&A...395..727P. doi:10.1051/0004-6361:20021318.
  2. ^ Klotz, A. (2010). "Protocols for Robotic Telescope Networks" (PDF). Advances in Astronomy. 2010 (496765): 1–8. Bibcode:2010AdAst2010E..86K. doi:10.1155/2010/496765. S2CID 55714132.
  3. ^ Oswalt, T. D., ed. (2012). The Future of Small Telescopes in the New Millennium: Volume I – Perceptions, Productivities, and Policies Volume II – The Telescopes We Use Volume III – Science in the Shadows of Giants. Springer Science+Business Media. pp. 100–101. ISBN 978-94-010-0253-0.
  4. ^ "RTML - Remote Telescope Markup Language". University of Göttingen. Retrieved 2 October 2010.
  5. ^ Proposal for a Telescope Commanding and Scheduling Data Standard (PDF) (Report). European Space Agency. 2015. p. 11.

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